Storing carbon dioxide in the same shale formations that produce natural gas may be an effective way to sequester carbon dioxide produced by fossil fuel-burning power plants, a U.S. study has found.READ MORE

The Marcellus shale formation (beige) spans six states in the northeastern U.S. Red and black dots indicate locations of natural gas wells completed between 2003 and 2011. (Image credit: U.S. Energy Information Administration)